Write a program that takes 2 integers as input and outputs them in ascending
order. I have given you the main and swap function. Each group writes one of 
the remaining functions.

Use this algorithm:

-get inputs
-put in ascending order
-output values

Group 1 writes the get_inputs function
Group 2 writes the ascending_order function that uses the swap function
Group 3 writes the give_output function



solution (including functions provided by me):

#include <iostream>

using namespace std;

//function prototypes (declarations)
void get_inputs(int& first, int& second);
void ascending_order(int& first, int& second);
void give_outputs(int first, int second);
void swap(int& first, int& second);

int main()
{
   int first, second;

   get_inputs(first, second);
   ascending_order(first, second);
   give_outputs(first, second);
 
   return 0;
}

//function definitions


//Passed in references to 2 variables not necessarily initialized yet.
//Assigns inputs from user to both reference parameters using cout and cin.
//Requires iostream library
void get_inputs(int& first, int& second)
{
   cout << "Enter 2 integers\n";
   cin >> first >> second;
}


//Passed in references to 2 integer variables that have been initialized.
//Uses swap function if needed to switch values so that first has a value
//smaller or equal to second.
void ascending_order(int& first, int& second)
{
   if (first > second)
   {
      swap(first, second);
   }
}


//Passed in by value 2 integers that are output using cin in the order they 
//are passed in (first second).
void give_outputs(int first, int second)
{
   cout << first << " " << second << endl;
}


//Passed in references to 2 integer variables that have been initialized. 
//The value passed in using first is assigned to the parameter second and the 
//value passed in using second is assigned to the parameter first.
void swap(int& first, int& second)
{
   int temp = first;
   first = second;
   second = temp;
}